11223223020221 has 4 divisors (see below), whose sum is σ = 11247568406844. Its totient is φ = 11198877633600.

The previous prime is 11223223020211. The next prime is 11223223020241. The reversal of 11223223020221 is 12202032232211.

It is a happy number.

11223223020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1295613062500 + 9927609957721 = 1138250^2 + 3150811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11223223020221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223223020211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12172692620 + ... + 12172693541.

It is an arithmetic number, because the mean of its divisors is an integer number (2811892101711).

Almost surely, 2^{11223223020221} is an apocalyptic number.

It is an amenable number.

11223223020221 is a deficient number, since it is larger than the sum of its proper divisors (24345386623).

11223223020221 is an equidigital number, since it uses as much as digits as its factorization.

11223223020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24345386622.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11223223020221 its reverse (12202032232211), we get a palindrome (23425255252432).

The spelling of 11223223020221 in words is "eleven trillion, two hundred twenty-three billion, two hundred twenty-three million, twenty thousand, two hundred twenty-one".